How do you check 1998 Buick Riviera Supercharger Oil and What Kind of oil?

To check the supercharger oil on a 1998 Buick Riviera, locate the supercharger oil reservoir, which is typically found on the supercharger itself. Remove the fill cap and visually inspect the oil level; it should be within the designated marks on the dipstick or fill neck. If the oil level is low, use a suitable supercharger oil, which is generally a synthetic oil specifically designed for superchargers, often with a viscosity of 5W-30 or similar. Always refer to the owner's manual for specific oil recommendations and capacities.